An igneous intrusive feature that forms from a lens-shaped mass of magma that arches the overlying strata upward is called a

A batholith is a mass of intrusive igneous rock that forms when magma due to volcanic eruption cools down and deposits in deep layers of earth crust and this mass remains unexposed as it is deposited with several layers of overlying strata. Therefore, the physical structure of batholith consist of lens-shaped mass of magma that is covered by overlying layers of strata, providing it an arch shape.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.